Are my parts compatible with each other and will fit my case? How much power do i need (PSU)?
Motherboard: ASUS Maximus IV Extreme B3 RoG Edition
Processor: Intel i7-2600k
Video Card: Evga Geforce GTX 580
RAM: Corsair Vengeance LP 1600mhz 16GB
Case: Cooler Master HAF 922M ATX Black Mid-Tower
SSD: Corsair Force Series GT 120GB
CD/DVD Drive: Asus Internal DVD Burner
Shows a system using an i7-920 (more power hungry than an i7-2600K) and a stock GTX 580 using 452W under Furmark and mystery program X (to get around Nvidia's OCP). I would tend to assume that this number is what was consumed at the wall, but even if it wasn't a 452W load would only stress a 650W PSU to 70%. Typical power consumption is likely to be a lot less.
So I think it would only be justified getting anything higher than a 650W PSU if:
a) you want to add another card
b) want to give yourself more upgrade options in the future
c) know that your system will be under heavy stress for more than ~50% of the time you use it.
d) not comfortable with stressing your PSU to 70%, ever.
It should be said that high quality power supplies are designed to deliver 100% of their labeled wattage for extended periods of time at or below their temperature rating.
Yeah but well the PSU won't only power the GTX 580. How about the other components. I'll use it for gaming most (maybe all) of the time xD. So if the 650w a sure one, is this okay? It's $145 .
C13-2596 ::Corsair CP-9020006-NA Professional Series Gold AX650 Modular Power Supply - 650W, 80 Plus Gold, 120mm Fan, Active PFC, Single +12V Rail(8.2 lbs)
Yes I know. That was the power consumption for a whole system. A GTX 580 by itself won't use 452W, it will be under 300W (unless you outrageously overclock it).
The AX 650 is a very good unit.
Agree with cutebeans, if this is primarily a gaming system then there's no point getting an i7-2600K or 16GB of RAM, unless changing to the i5-2500K and 8GB doesn't save you any money, which it will in most cases.